Question

classify the following chemical reaction as exothermic or endothermic
.electrolysis of water
.burning of natural gas. decomposition of calcium carbonate
.burning of magnesium ribbon in air

Answer 1

b and d are exothermic reaction. a and c are endothermic reaction

Answer 2

Exothermic and endothermic reaction

Explanation:

1. electrolysis of water - endothermic reaction
2. burning of natural gas- exothermic reaction
3. decomposition of calcium carbonate - endothermic reaction
4. burning of magnesium ribbon in air- exothermic reaction

• An exothermic reaction is a reaction in which heat is released. Because of the exothermic reaction, the temperature of the surrounding of the reaction is increased.
• An endothermic reaction is a reaction in which heat is absorbed. Because of the endothermic reaction, the temperature of the surrounding of the reaction is decreased.

Learn more:

What is exothermic and endothermic reaction

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